When a drone pilot captured footage of an enormous group of whales off the New South Wales coast last year, it sent scientists into a frenzy.
A pod of that size – known as a super-group – and the “bubble-net” feeding behaviour they were displaying had never been documented off Australia before.
A research paper has now confirmed both extraordinary events.
Video by Isabelle Rodd.
This article was originally published by Bbc.co.uk. Read the original article here.